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""^(15)C(8)+""^(15)C(9)-""^(15)C(6)-""^(...

`""^(15)C_(8)+""^(15)C_(9)-""^(15)C_(6)-""^(15)C_(7)` is equal to

A

8

B

0

C

6

D

4

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The correct Answer is:
B
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-PRACTICE EXERCISE
  1. If ""^(n)C(4)=""^(n)C(8), then ""^(n)C(2) is

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  2. ""^(29)C(5)+sum(r=0)^(4)""^((33-r))C(4)=

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  3. ""^(15)C(8)+""^(15)C(9)-""^(15)C(6)-""^(15)C(7) is equal to

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  4. If ""^(18)C(15)+2(""^(18)C(16))"+"^(17)C(16)+1=""^(n)C(3) then n is

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  5. ""^(14)C(4)+sum(j=1)^(4)""^((18-j))C(3) is equal to

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  6. If p and q are the greatest values of ""^(2n)C(r) and ""^(2n-1)C(r) re...

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  7. If ""^(n+1)C(3)=4(""^(n)C(2)), then n is equal to

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  8. ""^(2n)C(2)-2""^(n)C(2)=

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  9. The least positive integral value of x which satisfies the inequality ...

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  10. The least value of the natural numbar 'n' satisfying C(n,5)+C(n,6)gtC(...

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  11. If ""^(n)C(r-1):""^(n)C(r):""^(n)C(r+1)=2:4:5 then (n,r) is

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  12. ""^(n) C(r-1) = 330 ,""^(n)C(r)=462 , ""^(n)C(r+1) = 462 implies r=

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  15. The number of ways can 5 red and 4 white balls be drawn from a bag con...

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